Q: What are the prime factors of the number 221,623,016?

 A: 2, 17, 1629581

Why are those the prime factors of the number 221,623,016?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 221,623,016

221,623,016
Factor Arrows
2110,811,508
Factor Arrows
255,405,754
Factor Arrows
227,702,877
Factor Arrows
171,629,581

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 17, 1629581

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 17 x 1,629,581 = 221,623,016

This can also be written as 23 x 171 x 1,629,5811 = 221,623,016

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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